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Self-Duality in Superconductor-Insulator Quantum Phase Transitions

Adriaan M. J. Schakel

cond-matarXiv:cond-mat/0002025

Abstract

It is argued that close to a Coulomb interacting quantum critical point, the interaction between two vortices in a disordered superconducting thin film separated by a distance r changes from logarithmic in the mean-field region to 1/r in the region dominated by quantum critical fluctuations. This gives support to the charge-vortex duality picture of the observed reflection symmetry in the current-voltage characteristics on both sides of the transition.

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